Introduction During reconnaissance and penetration testing, understanding a target’s defensive setup is critical. Before attempting any testing, security professionals need to know what protections are in place. One of the most common defenses used by modern web applications is a Web Application Firewall (WAF). To identify this protection layer, a specialized tool called WafW00f is widely used. What is WafW00f? WafW00f is an open-source reconnaissance tool designed to detect the presence of a Web Application Firewall. It helps security testers determine: Whether a WAF is protecting the target The specific type or vendor of the WAF This information is useful when planning testing strategies and understanding possible restrictions. What is a Web Application Firewall (WAF)? A Web Application Firewall (WAF) is a security system that monitors and filters incoming HTTP/HTTPS traffic between users and a web application. It protects against attacks such as: SQL Injection Cross-Site Scrip...